Xiaoting Liu

Jinan University (Guangzhou, China) · Institute for Environment and Climate Research

Air pollution is among the top risk faced by people around the world, and therefore combating it is among the top priorities. It begins with identifying the sources that contribute the most to local air pollution to prioritize their control. There are advanced methods for source identification and apportionment, but such methods are not available i...

The diurnal variation of pollutants such as particles and carbon monoxide (CO) in urban environments typically follow the traffic density, with two peaks coinciding with the weekday morning and evening rush-hour periods. However, observations made in central Brisbane, the third largest city in Australia, demonstrated an anomalous diurnal variation...

Concerns about air quality were expressed in preparations for the Commonwealth Games (Games), which were held at the Gold Coast, Australia, from 4th to 15th April, 2018, an international sporting event attended by more than 6600 athletes and over 670,000 visitors. Our aim was to trial application of low-cost sensors by conducting high spatial resol...

As the environmental awareness of urban citizens increases, traditional air quality monitoring stations cannot satisfy the need for air quality data at high temporal and spatial resolution due to their high construction and maintenance costs. Low-cost air quality monitors are being increasingly used for this purpose because of their portability and...

Traffic-induced air pollutant emissions are currently rising rapidly. However, measurement of the roadside environment and calculation of the emission factors for traffic-induced PM2.5 are restricted to certain locations and periods due to the limitations of conventional air monitoring techniques. This paper introduces a portable sensor package wit...

Low-cost air quality sensors are increasingly being used in many applications; however, many of their performance characteristics have not been adequately investigated. This study was conducted over a period of 13 months using low-cost air quality monitors, each comprising two low-cost sensors, which were subjected to a wide range of pollution sour...

While low-cost particle sensors are increasingly being used in numerous applications, most of them have no heater or dryer at the inlet to remove water from the sample before measurement. Deliquescent growth of particles and the formation of fog droplets in the atmosphere can lead to significant increases in particle number concentration (PNC) and...

While low-cost particle sensors are being increasingly used in numerous applications, most of them have no heater or dryer at the inlet to remove water from the sample before measurement. Deliquescent growth of particles and the formation of fog droplets in the atmosphere can lead to significant increases in particle number concentration (PNC) and...

Size-segregated APM was collected using an 8 Stage Non-Viable Cascade Impactor. • Concentrations of size-segregated APM and HMs in size-segregated APM were measured. • Health risk of HMs in APM was assessed by hazard quotient and cancer risk. • Non-carcinogenic health effect existed in the APM. • Cancer risks of Cd, Ni and Cr were all below the saf...

PM 2.5 sampling was conducted at three different function areas of Changsha. • Concentrations of PM 2.5 and heavy metals in PM 2.5 were measured. • Source identification showed that heavy metals are from anthropogenic sources. • The potential ecological risk of heavy metals in Changsha was relatively high. a b s t r a c t Editor: P. Kassomenos Keyw...